Home / 11,144.37-15,381.51-6,428.01

Finding the Fourth Proportional to 11,144.37, 15,381.51 and 6,428.01

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Solution

The fourth proportional to 11,144.37, 15,381.51 and 6,428.01 is: 8,871.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,144.37 : 15,381.51 = 6,428.01 : x
  2. Step 2: Convert to fraction form
    11,144.37/15,381.51 = 6,428.01/x
  3. Step 3: Cross multiply
    11,144.37x = 15,381.51 × 6,428.01
  4. Step 4: Simplify right side
    11,144.37x = 98,872,500.10
  5. Step 5: Solve for x
    x = 98,872,500.10/11,144.37
  6. Step 6: Final answer
    x = 8,871.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.